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Frame sealing glue and method for encasing alignment of color film substrate and array substrate based on frame sealing glue

A technology for an array substrate and a color filter substrate, which is applied in the field of frame sealing glue and the cell matching of array substrates and color filter substrates based on the frame sealing glue, can solve the problems of frame sealing glue pollution, liquid crystal pollution, long heating and curing time, etc. , to reduce the degree of pollution, improve the yield, and shorten the curing time.

Inactive Publication Date: 2012-08-29
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing sealant, it is based on epoxy resin, acrylic acid and necessary additives are mixed and then cured; there are small molecules that are easy to diffuse in the sealant, and only acrylic acid is polymerized during the ultraviolet curing process, resulting in two The high polymer with a two-dimensional structure has a large gap between each layer of two-dimensional structure, which cannot prevent the small molecular substances in the sealant and the outside air from diffusing into the liquid crystal, causing the liquid crystal to be polluted; when the sealant is heated During the curing process, due to the long heating and curing time, the contact time between the incompletely cured frame sealant and the liquid crystal is relatively long, which will easily cause the small molecules in the frame sealant and the outside air to pollute the liquid crystal

Method used

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  • Frame sealing glue and method for encasing alignment of color film substrate and array substrate based on frame sealing glue
  • Frame sealing glue and method for encasing alignment of color film substrate and array substrate based on frame sealing glue
  • Frame sealing glue and method for encasing alignment of color film substrate and array substrate based on frame sealing glue

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Experimental program
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Embodiment 1

[0017] A frame sealant, including epoxy acrylate, photoinitiator, filler and thinner.

[0018] The epoxy acrylate is a substance shown in structural formula 1.

[0019] Structural formula 1:

[0020]

[0021] The embodiments of the present invention provide a frame sealant and a method for aligning a color filter substrate and an array substrate based on the frame sealant. By using epoxy acrylate as a polymer, the frame can be sealed only by ultraviolet curing. The glue is cured and formed, which shortens the curing time of the sealing glue and reduces the pollution of small molecular substances to the liquid crystal.

[0022] The epoxy acrylate is generated by an epoxy ring-opening esterification reaction between epoxy resin and acrylate at a certain temperature and in the presence of a catalyst and a polymerization inhibitor.

[0023] The catalyst can be tetrabutylammonium bromide, tetrabutylammonium bromide, N,N-dimethylbenzylamine or triethylamine.

[0024] The polym...

Embodiment 2

[0075] After the curing of the frame sealant described in Example 1 is completed, when the liquid crystal display is used for a long time, the seal of the frame sealant will be caused by the poor thermal stability and mechanical stability of the epoxy resin. sex decline. Therefore, further, the epoxy acrylate is bisphenol A epoxy acrylate, and the structure of the bisphenol A epoxy acrylate is shown in structural formula 6.

[0076] Structural formula 6:

[0077]

[0078] The substituent in the bisphenol A type epoxy acrylate contains a benzene ring, which means that the epoxy acrylate has strong thermal stability and mechanical stability, thereby improving the thermal stability and mechanical stability of the sealant. Enhanced the wear resistance of the sealant.

[0079] The embodiment of the present invention provides a frame sealant and a method for aligning a color filter substrate and an array substrate based on the frame sealant. By using epoxy acrylate as a polymer...

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Abstract

The invention discloses frame sealing glue and a method for encasing alignment of a color film substrate and an array substrate based on the frame sealing glue, belonging to the field of organic polymer composition. The invention aims at solving the problem in the prior art that the curing time of the frame sealing glue is so long to the extent that the micro-molecular substances of the frame sealing glue and external air penetrate into the frame sealing glue, which causes pollution to the liquid crystal between the color film substrate and the array substrate. The frame sealing glue contains epoxy acrylate, photoinitiator, filler and thinner. The method for encasing alignment of the color film substrate and the array substrate based on the frame sealing glue includes the following steps: respectively instilling liquid crystal and coating the frame sealing glue on the array substrate and the color film substrate; conducting vacuum encasing alignment operations to the array substrate and the color film substrate; and irradiating the color film substrate and the array substrate through ultraviolet light to enable the epoxy acrylate in the frame sealing glue to form three-dimensional network polymer, and finally curing.

Description

technical field [0001] The present invention relates to a frame sealant and a method for aligning an array substrate and a color filter substrate based on the frame sealant, in particular to a frame sealant with a short curing time and an array substrate and a color filter substrate based on the frame sealant. film substrate. Background technique [0002] In the production process of TFT-LCD (Thin Film Transistor-Liquid Crystal Display), the vacuum box-to-box process of the TFT array substrate and the color filter substrate is very important, so that the TFT array substrate and the color filter substrate The frame glues the box to form a liquid crystal panel. The sealant acts as a seal between the connection of the TFT array substrate and the color filter substrate, and protects the liquid crystal between the TFT array substrate and the color filter substrate from being affected by the outside air. [0003] The main component of the existing frame sealant is a mixture of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1339G02F1/1333G02F1/1335
Inventor 张飞飞肖昂
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD